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CAS 20344-49-4

CAS 20344-49-4 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

Chemical identity and properties

PubChem 2D chemical structure for CAS 20344-49-4

CAS 20344-49-4PubChem CID 9793696

iron hydroxide oxide (Fe(OH)O)

Ferric oxyhydroxide is a Phosphate Binder. The mechanism of action of ferric oxyhydroxide is as a Phosphate Chelating Activity. — FDA Pharm Classes

IUPAC name: iron(3+);oxygen(2-);hydroxide

Molecular formula: FeHO2
Molecular weight: 88.85 g/mol
Exact mass: 88.932590 Da
Topological polar surface area: 2.0 Å²
Hydrogen-bond donors: 1
Hydrogen-bond acceptors: 2
Covalent units: 3
Defined stereocentres: 0

Also known as

Ferric oxyhydroxideFerric hydroxide oxideFERRIC OXY-HYDROXIDEIRON HYDROXIDE OXIDE (FEO(OH))5Fe2O3.9H2OFERRIC OXYHYDROXIDE (FEO2H)FERRIC HYDROXIDE OXIDE (FEOOH)Proferdex

10 more reported names

RefChem:791334243-746-487PZU03K0KIron hydroxide oxideiron(III) oxyhydroxideFeHO2ferric;oxygen(2-);hydroxideFERRIC HYDROXIDE [MI]IEECXTSVVFWGSE-UHFFFAOYSA-MIron(3+) hydroxide oxide (1/1/1)

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External database identifiers

EPA DTXSID:DTXSID3042057

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 20344-49-4

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How CAS 20344-49-4 is used on this site

CAS 20344-49-4 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 20344-49-4 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.